Lieberman: GSA scandal 'sickening'

4/22/12 10:46 AM EDT

Sen. Joe Lieberman (I-Conn.) said Sunday that he viewed the GSA spending scandal as "sickening" and unrepresentative of the character of government employees.

"This is really outrageous - for me, sickening, episode. It doesn't represent what I know to be most people who work for the federal government," Lieberman said on CBS's "Face the Nation." "But it's so outrageous, these people took something like eight trips to Las Vegas over a year and a half, to plan this convention - those planning trips cost $150,000."

Lieberman called for oversight investigation in the other regions covered by the General Services Administration.

"We're going to ask the inspector general now to conduct a similar oversight investigation of the nine other regions… I want to know if there's abuse in the other regions, particularly when it comes to conferences," the senator said.